Update sbt to 1.3.3 (#74)

scala-steward · raboof · commit 4cee61ca2d1c · 2019-11-19T16:23:52.000+01:00
diff --git a/project/build.properties b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.3.2
+sbt.version=1.3.3
